Reese Witherspoon, Anna Kendrick, Jessica Alba, and More Best-Dressed From Last Night's Hollywood Stands Up to Cancer Benefit

Last night, some of our favorite leading ladies in Hollywood attended the Reese Witherspoon-hosted Hollywood Stands Up to Cancer Benefit. We love celebrities pitching in for a good cause—and they all looked gorgeous doing it. Check out our 10 picks for best dressed of the night. Whose look do you like best?